qinglan.Canvas.Const = qinglan.Canvas.Class(function(){

}).statics({
	DEG_TO_RAD: Math.PI/180,
	RAD_TO_DEG: 180/Math.PI,
	deg2rad: function(deg){
		return deg * qinglan.Canvas.Const.DEG_TO_RAD;
	},
	rad2deg: function(rad){
		return rad * qinglan.Canvas.Const.RAD_TO_DEG;
	}
});
